Timbren Industries FF350SD4 SES Suspension Enhancement System for Ford F-350 Super Duty

The Timbren Industries FF350SD4 SES (Suspension Enhancement System) is a heavy-duty suspension upgrade designed specifically for Ford F-350 Super Duty trucks. This system provides progressive load support that activates automatically when additional weight is added, making it ideal for towing trailers, hauling cargo, or carrying heavy payloads.

Key Features:

• Hollow rubber spring design provides progressive cushioning that engages based on load weight
• No air lines, compressors, or manual adjustments required—completely maintenance-free operation
• Eliminates squat, sway, and body roll when towing or hauling heavy loads
• Improves ride comfort and vehicle stability under load
• Direct bolt-on installation replaces factory bump stops—no drilling or modifications required
• Constructed from durable Aeon hollow rubber springs for long-lasting performance
• Works independently of existing suspension system for added support when needed

The SES system installs between the frame and axle, acting as a supplemental spring that only engages when weight compresses the suspension. When unloaded, the vehicle maintains its factory ride quality. This makes the FF350SD4 an excellent solution for work trucks and recreational vehicles that frequently switch between loaded and unloaded conditions.